[Phylum] [Arthropoda] Siebold, 1848 - arthropods
   Chelicerata Heymons, 1901
     Euchelicerata Weygoldt & Paulus, 1979
       [Order] †Eurypterida Burmeister, 1843 - eurypterids
         [Suborder] †Eurypterina Burmeister, 1843
           Superfamily †'Eurypteroidea' Burmeister, 1843 [monophyletic?]
             Family †Strobilopteridae Lamsdell & Selden, 2013
               1 Genus †Buffalopterus Kjellesvig-Waering & Heubusch, 1962
               2 Genus †Strobilopterus Ruedemann, 1935